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An integration time adaptive control method for atmospheric composition detection of occultation
Author(s): Lin Ding; Shuai Hou; Fei Yu; Cheng Liu; Chao Li; Lin Zhe
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Paper Abstract

When sun is used as the light source for atmospheric composition detection, it is necessary to image sun for accurate identification and stable tracking. In the course of 180 second of the occultation, the magnitude of sun light intensity through the atmosphere changes greatly. It is nearly 1100 times illumination change between the maximum atmospheric and the minimum atmospheric. And the process of light change is so severe that 2.9 times per second of light change can be reached. Therefore, it is difficult to control the integration time of sun image camera. In this paper, a novel adaptive integration time control method for occultation is presented. In this method, with the distribution of gray value in the image as the reference variable, and the concepts of speed integral PID control, the integration time adaptive control problem of high frequency imaging. The large dynamic range integration time automatic control in the occultation can be achieved.

Paper Details

Date Published: 12 January 2018
PDF: 8 pages
Proc. SPIE 10620, 2017 International Conference on Optical Instruments and Technology: Optoelectronic Imaging/Spectroscopy and Signal Processing Technology, 106200I (12 January 2018); doi: 10.1117/12.2284918
Show Author Affiliations
Lin Ding, Beijing Institute of Space Mechanics and Electricity (China)
Shuai Hou, Beijing Institute of Space Mechanics and Electricity (China)
Fei Yu, Beijing Institute of Space Mechanics and Electricity (China)
Cheng Liu, Beijing Institute of Space Mechanics and Electricity (China)
Chao Li, Beijing Institute of Space Mechanics and Electricity (China)
Lin Zhe, Beijing Institute of Space Mechanics and Electricity (China)


Published in SPIE Proceedings Vol. 10620:
2017 International Conference on Optical Instruments and Technology: Optoelectronic Imaging/Spectroscopy and Signal Processing Technology
Guohai Situ; Xun Cao; Wolfgang Osten; Liquan Dong, Editor(s)

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